LG KP500

Internet Settings:
Select Menu > Settings > Connection > Access points.
→ Add Profile.
Enter the following information:
→ Connection title: good2go web
→ Bearer: GPRS
→ Authentication: Leave blank
→ Username: Leave blank
→ Password: Leave blank
→ APN: att.mvno
Select Save > Back to Connectivity > Internet profiles > Add profile.
Enter the following information:
→ Connection title: good2go web
→ Use proxy: On
→ Proxy server address: proxy.mvno.att.ztarmobile.com
→ Proxy server port: 80
→ APN: att.mvno
Select Save > Internet > Settings > Profiles > Add Profile.
→ Connection title: good2go web
→ Internet Profile: good2go web
Select Save > Activate good2go web.

MMS Settings:
Select Menu > Settings > Connectivity > Internet Profiles > Add Profile.
Enter the following information:
→ Connection title: good2go web
→ Use proxy: On
→ Proxy server address: proxy.mvno.att.ztarmobile.com
→ Proxy server port: 80
→ APN: att.mvno
Select Multi Msg Center.
Add Center and enter the following information:
→ Connection title: good2go web
→ MMSC URL: http://mmsc.cingular.com
→ MMS profile: good2go web
Select Save > Yes to activate.